Publications by authors named "W A Christmas"

To discover specific variants with relatively large effects on the human face, we have devised an approach to identifying facial features with high heritability. This is based on using twin data to estimate the additive genetic value of each point on a face, as provided by a 3D camera system. In addition, we have used the ethnic difference between East Asian and European faces as a further source of face genetic variation.

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A large amount of training data is usually crucial for successful supervised learning. However, the task of providing training samples is often time-consuming, involving a considerable amount of tedious manual work. In addition, the amount of training data available is often limited.

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We address the problem of anomaly detection in machine perception. The concept of domain anomaly is introduced as distinct from the conventional notion of anomaly used in the literature. We propose a unified framework for anomaly detection which exposes the multifaceted nature of anomalies and suggest effective mechanisms for identifying and distinguishing each facet as instruments for domain anomaly detection.

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This work describes the theory of resampling effects within the context of image simulation for mammographic images. The process of digitization associated with using digital imaging technology needs to be correctly addressed in any image simulation process. Failure to do so can lead to overblurring in the final synthetic image.

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Over the past 70 years a legend has evolved that the first college health program in the United States was established at Amherst College in 1861. Although the program at Amherst was innovative in its day and served as a model for the field of college health, several other institutions prior to 1860 appropriated funds, hired staff, and established on-campus programs to improve the health of their students. The military academies led the way, and the first of these early programs to become operational was located at the US Military Academy at West Point, New York, in 1830.

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